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Finding the Fourth Proportional to 255,460.12, 383,236.65 and 86,971.81

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Solution

The fourth proportional to 255,460.12, 383,236.65 and 86,971.81 is: 130,473.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,460.12 : 383,236.65 = 86,971.81 : x
  2. Step 2: Convert to fraction form
    255,460.12/383,236.65 = 86,971.81/x
  3. Step 3: Cross multiply
    255,460.12x = 383,236.65 × 86,971.81
  4. Step 4: Simplify right side
    255,460.12x = 33,330,785,108.84
  5. Step 5: Solve for x
    x = 33,330,785,108.84/255,460.12
  6. Step 6: Final answer
    x = 130,473.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.